We’re going to straight out agree with [Pete] on how surprisingly quiet doorbells are now a days, and if we had it our way we would put his Lunkenheimer train whistle doorbell in every home*. The setup he uses is surprisingly simple, opting for a pre-built wireless doorbell that signals a microcontroller which in turn drives a relay and solenoid. While he does include a video, we felt it didn’t quite show the intensity of these whistles.
*HaD is not responsible for hearing loss and subsequent melted brains.
This steam-powered tank is really something of a steam-electric hybrid. Steam provides the locomotion, but an electrical system provides the remote control and steering. A full boiler will provide 10-15 minutes of operation which you can see in the video after the break. Before you leave a nasty comment: Yes, we realize this project is from several years ago. It’s new to us and the completion date doesn’t diminish the novelty of this well-executed build. This is the quality and uniqueness we’re used to seeing from [Crabfu].
When we saw the video of the Phasma insectoid robot above, we immediately thought of the iSprawl. After checking out their site, it turns out that the two are connected in some way, we’re not sure how, maybe just inspiration. The Phasma gives us a little more insight into the construction of the bot. The photos are highly detailed so you can see how the drive works, using the sliding cables to extend the “feet”. It seems quite agile in the video. The drive system, working off of a single cam seems like it would be easy to convert to steam. We would love to see that.
[Ani Niow] built this steam powered vibrator. It has a milled stainless steel shell with a brass motor structure. The motor is a Tesla turbine made from a stack of Dremel diamond cutoff wheels. This drives an off-center weight to create the vibration. She tested it using a pressure cooker as the steam source. It worked, but became so hot it had to be held using welding gloves. It works just as well with compressed air though. You can see the device at the Femina Potens Art Gallery in San Francisco or later this month at Maker Faire.
[robbtoberfest] put together this cool looking steam powered spud pistol. Made from household materials, like a lighter and some copper pipe, this spud gun builds pressure in its little bitty boiler to expel the projectiles. It seems as though he’s using a cork to supply a seal, so why bother with potatos? At roughly 2 minutes between shots, its not the quickest, but it sure is cool. Good job [robbtoberfest].
The land-speed record for steam-powered locomotion has been holding steady for 88 years at 127mph, but a team of British engineers and stunt drivers will attempt to break it with the Steam Car.
The Steam Car works by burning liquid petroleum fuel at 750° F, which heats 10.5 gallons of water, converting into steam. The steam passes through lagged pipes before it is injected into the 360-hp Curtis turbine at extremely high pressure and speed via compressed air hydraulics. It spins the turbine at over 13,000 rpm, powering the rear wheels, allowing the car to reach speeds higher than 150mph. The car itself is 25 feet long and uses about 1.86 miles of tubing. All of the hot pressurized steam is ejected from the exhaust, which means the car is only capable of running for about 3 minutes, and requires an 8-minute warmup.
The attempt to break the speed record will occur in late August at Bonneville.